Nearly 6 feet across this artifact is believed to be of Aztec origin and the largest of its kind ever discovered. When smeared with the blood of a sentient sacrifice and lit by the light of the full moon, the owner can ask the mirror questions related to occult matters. Answers appear on the surface of the mirror, either in writing or in the form of pictures.

In game terms, the mirror grants a +6 bonus to Knowledge (Occult) rolls. It can also be used to divine the future, as discussed under Signs & Portents (Horror Companion page 28). The mirror may be asked a question only once every 24 hours.